Shengfeng Qin

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Large-sized free-form surface design presents some challenges in practice. Especially at the conceptual design stage, sculpting physical models is still essential for surface development, because CAD models are less intuitive for designers to design and modify them. These sculpted physical models can be then scanned and converted into CAD models. However,(More)
In order to efficiently communicate with non-hearing-impaired (NHI) in particular locations in real-time, deaf people need a more intelligent and easy to use tool beyond their sign language. In this paper, we propose a new communication tool, combining British sign language with gesture-based mobile communication technology. It can quickly translate sign(More)
This paper describes a new method for recognizing overtraced strokes to 2D geometric primitives, which are further interpreted as 2D line drawings. This method can support rapid grouping and fitting of overtraced polylines or conic curves based on the classified characteristics of each stroke during its preprocessing stage. The orientation and its endpoints(More)
This paper presents an effective method for segmenting and building three-dimensional (3D) human models with different levels of detail (LOD) from scanned human data. Firstly, the scanned human body is decomposed into different parts according to the topological structure of human bodies. Then a simplification algorithm is developed to generate LOD human(More)
This research explored a new direction of improving collaborative design by performance measurement. More specifically, a novel 3-dimensional performance measurement model is developed and the purpose of this model is to help project managers improve team collaboration by indicating strengths and weaknesses of team members during the project development(More)
The interaction method of current CAD systems has become one of the impediments of rapid 3D conceptual design. Because (1) the keyboard/mouse based interface limits the user to create 3D objects on a 2D plane; (2) current CAD systems are too complex for conceptual design and require users to be professionally trained. In this paper, we present an innovative(More)
This paper presents a novel method for interpreting overtraced strokes to single line drawing. The approach consists of three stages: preprocessing, stroke classification, strokes grouping and fitting. The preprocessing methods include stroke preprocessing and grouping preprocessing. The former discuss the polygonal approximation to represents the stroke(More)
The present situation of the telemedicine system was analyzed and the basic requirements from electronic and information technologies for building up the telemedicine system was pointed out. Especially, the concept of telemedicine product design for building up the telemedicine system based on Chinese traditional medicine was proposed. From the analysis, it(More)